คงแก้ว ม., and ฤทธิชัย ท. “Marketing Efficiency of Enterprise Community of Preserved Chili”. Ratchaphruek Journal, vol. 16, no. 3, Oct. 2018, pp. 106-12, https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/153346.